CN115867073A - Organic light-emitting display panel and display device - Google Patents

Abstract

Embodiments of the present application provide an organic light-emitting display panel and a display device. The organic light-emitting display panel includes a display area and a non-display area surrounding the display area. The display area includes a stacked thin film transistor layer, an organic light-emitting layer, a microlens array layer, and Refractive index matching layer; the microlens array layer includes a plurality of microlenses, the refractive index matching layer is different from the microlens array layer, and the first surface of the microlens in contact with the refractive index matching layer faces the microlens array layer to match the refractive index The one with the lower refractive index in the layer is raised; the thin film transistor layer includes a plurality of inorganic layers, and the inorganic layer extends from the display area to the non-display area; the non-display area includes a filling layer, and the filling layer is arranged on the inorganic layer close to the organic light-emitting display panel to emit light One side of the surface and the filling layer are made of the same material as at least one of the microlens array layer and the refractive index matching layer. In the embodiment of the present application, by disposing a filling layer in the non-display area, the difference in thickness between the display area and the non-display area is filled, and the process flow is simple.

Description

An organic light emitting display panel and display device

This application is a divisional application with an application date of June 4, 2020, an application number of 202010498769.6, and an invention title of "An Organic Light-Emitting Display Panel and Display Device".

【Technical field】

The present application relates to the field of display technology, in particular to an organic light emitting display panel and a display device.

【Background technique】

Compared with liquid crystal displays, organic light-emitting displays have many advantages, such as thinner and thinner, higher brightness, lower power consumption, faster response, higher definition, better flexibility, and higher luminous efficiency, and have gradually become the mainstream display technology. The light-emitting principle of the organic light-emitting display is that the holes generated by the anode and the electrons generated by the cathode in the organic light-emitting device move under the action of an electric field, inject them into the hole transport layer and the electron transport layer respectively, and migrate to the organic light-emitting material. When the two meet in the light-emitting material layer, energy excitons are generated, thereby exciting the light-emitting molecules in the organic light-emitting material layer to generate visible light.

However, since the organic light-emitting device is only arranged in the display area, and there are other film layers only provided in the display area, there is a difference in thickness between the display area and the non-display area due to the difference in film layer arrangement. The difference in thickness between the display area and the non-display area may lead to the risk of fracture or membrane rupture in the film structure spanning the display area and the non-display area during the preparation process. For example, during the preparation process of the signal line spanning the display area and the non-display area, the thickness of the photoresist in the non-display area is greater than that of the display area, then the photoresist in the non-display area may not be completely cured during the exposure process, resulting in During the developing process, the photoresist that needs to be cured but is not cured is developed, and then the part of the signal line that needs to be kept during the etching process is etched away.

【Application content】

In view of this, embodiments of the present application provide an organic light emitting display panel and a display device to solve the above problems.

In a first aspect, an embodiment of the present application provides an organic light emitting display panel, including a display area and a non-display area surrounding the display area. The display area includes a thin film transistor layer, an organic light emitting layer, a microlens array layer and a refractive index matching layer, wherein the organic light emitting layer is located on the side of the thin film transistor layer close to the light emitting surface of the organic light emitting display panel, and the microlens array layer is located on the side of the organic light emitting layer close to the light emitting surface of the organic light emitting display panel. On one side of the light-emitting surface of the organic light-emitting display panel, the refractive index matching layer is located on the side of the microlens array layer close to the light-emitting surface of the organic light-emitting display panel; the organic light-emitting layer includes a plurality of light-emitting pixels, and the microlens array layer includes a plurality of microlenses. The lens and the light-emitting pixel are arranged correspondingly; the refractive index of the refractive index matching layer and the microlens array layer are different, and the surface of the microlens and the refractive index matching layer is the first surface, the first surface is a curved surface, and the first surface faces the microlens array The one with the lower refractive index in the layer and the refractive index matching layer protrudes; the thin film transistor layer includes a plurality of inorganic layers, and the inorganic layer extends from the display area to the non-display area; the non-display area includes a filling layer, and the filling layer is arranged near the inorganic layer One side of the light-emitting surface of the organic light-emitting display panel; the material of the filling layer is the same as that of at least one of the microlens array layer and the refractive index matching layer.

In the second aspect, the embodiment of the present application further provides an organic light emitting display device, including the organic light emitting display panel provided in the first aspect.

In the organic light-emitting display panel and the display device provided in the embodiments of the present application, by disposing the filling layer in the non-display area, the film layer difference between the display area and the non-display area between the refractive index matching layer or the microlens array layer is filled. The resulting difference in thickness is beneficial to the preparation of subsequent film layers or traces, and can ensure the production yield. In addition, the filling layer in the non-display area is set in the same layer as at least one of the microlens array layer and/or the refractive index matching layer, then the filling layer can be set simultaneously with the microlens array layer and/or the refractive index matching layer, simplifying process flow.

【Description of drawings】

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the accompanying drawings that need to be used in the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. Those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort.

FIG. 1 is a schematic diagram of an organic light-emitting display panel provided in an embodiment of the present application;

FIG. 2 is a cross-sectional view of an organic light-emitting display panel provided by an embodiment of the present application;

FIG. 3 is a cross-sectional view of an organic light-emitting display panel provided by another embodiment of the present application;

FIG. 4 is a cross-sectional view of an organic light-emitting display panel provided by another embodiment of the present application;

FIG. 5 is a cross-sectional view of an organic light-emitting display panel provided by another embodiment of the present application;

Fig. 6 is a partially enlarged view of the display area shown in Fig. 2-Fig. 5;

Fig. 7 is a schematic diagram of the orthographic projection of the filling layer and the refractive index matching layer in Fig. 2;

Fig. 8 is a schematic diagram of the orthographic projection of the filling layer and the microlens array layer in Fig. 3;

Fig. 9 is a schematic diagram of an orthographic projection of the filling layer, the microlens array layer, and the refractive index matching layer in Fig. 4;

FIG. 10 is a cross-sectional view of another organic light-emitting display panel provided by an embodiment of the present application;

Fig. 11 is a cross-sectional view of another organic light-emitting display panel provided by an embodiment of the present application;

Fig. 12 is a cross-sectional view of another organic light emitting display panel provided by another embodiment of the present application;

Fig. 13 is a cross-sectional view of yet another organic light emitting display panel provided by another embodiment of the present application;

Fig. 14 is a cross-sectional view of another organic light-emitting display panel provided by an embodiment of the present application;

FIG. 15 is a cross-sectional view of yet another organic light emitting display panel provided by another embodiment of the present application;

Fig. 16 is a cross-sectional view of yet another organic light emitting display panel provided by another embodiment of the present application;

FIG. 17 is an equivalent circuit diagram of a multiplex switch provided in an embodiment of the present application;

Fig. 18 is a cross-sectional view of another organic light-emitting display panel provided by the embodiment of the present application;

FIG. 19 is a schematic diagram of an organic light emitting display device provided by an embodiment of the present application.

【Detailed ways】

In order to better understand the technical solutions of the present application, the embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.

It should be clear that the described embodiments are only some of the embodiments of the present application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

Terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of this application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.

It should be understood that the term "and/or" used herein is only an association relationship describing associated objects, which means that there may be three relationships, for example, A and/or B, which may mean that A exists alone, and A and B exist simultaneously. B, there are three situations of B alone. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

In the description of this specification, it should be understood that words such as "substantially", "approximately", "approximately", "approximately", "approximately" and "substantially" described in the claims and embodiments of the present application refer to Within the reasonable range of process operation or tolerance, it can be generally agreed, rather than an exact value.

It should be understood that although the terms first, second, etc. may be used to describe partial structures in the embodiments of the present application, these structures should not be limited to these terms. These terms are only used to distinguish these structures from one another. For example, without departing from the scope of the embodiments of the present application, the first filling layer may also be called the second filling layer, and similarly, the second filling layer may also be called the first filling layer.

The applicant in this case provided a solution to the problems existing in the prior art through detailed and in-depth research.

Fig. 1 is a schematic diagram of an organic light emitting display panel provided in an embodiment of the present application, Fig. 2 is a cross-sectional view of an organic light emitting display panel provided in an embodiment of the present application, and Fig. 3 is a sectional view of an organic light emitting display panel provided in another embodiment of the present application A cross-sectional view of an organic light-emitting display panel, FIG. 4 is a cross-sectional view of an organic light-emitting display panel provided by another embodiment of the present application, and FIG. 5 is a cross-sectional view of an organic light-emitting display panel provided by another embodiment of the present application .

As shown in Figure 1, the organic light-emitting display panel provided by the embodiment of the present application includes a display area AA and a non-display area BB surrounding the display area AA, wherein the display area AA is a part for luminescent display, and the non-display area BB is for peripheral circuit setup.

As shown in FIGS. 2-5 , the display area AA includes a base substrate 01 , a thin film transistor layer 02 , an organic light emitting layer, a microlens array layer 06 and a refractive index matching layer 07 . Wherein, the thin film transistor layer 02 is arranged on one side of the base substrate 01, the organic light-emitting layer is located on the side of the thin film transistor layer 02 close to the light-emitting surface of the organic light-emitting display panel, and the microlens array layer 06 is located on the organic light-emitting layer of the organic light-emitting display panel. On one side of the light-emitting surface, the refractive index matching layer 07 is disposed on the side of the microlens array layer 06 close to the light-emitting surface of the organic light-emitting display panel. That is, in the display area AA, the base substrate 01, the thin film transistor layer 02, the organic light emitting layer, the microlens array layer 06 and the refractive index matching layer 07 are sequentially stacked along the direction from the base substrate 01 to the light-emitting surface of the display panel.

Please continue to refer to FIG. 2-FIG. 5, the organic light-emitting layer includes a plurality of light-emitting pixels 03, and the light-emitting pixels 03 may include an anode 31, a cathode 32, and an organic light-emitting material layer 33 between the anode 31 and the cathode 32; in addition, the anode 31 and A hole transport layer 34 is further included between the organic luminescent material layer 33 , and an electron transport layer 35 is further included between the cathode 32 and the organic luminescent material layer 33 .

Please continue to refer to FIGS. 2-5 , the microlens array layer 06 includes a plurality of microlenses 61 / 62 , wherein the microlenses 61 / 62 are arranged corresponding to the light emitting pixels 03 . For example, the orthographic projection of the microlens 61 corresponding to a luminescent pixel 03 on the substrate 01 surrounds the orthographic projection of the luminescent pixel 03 on the substrate 01, and/or the microlens 62 corresponding to a luminescent pixel 03 is on the substrate 01 The orthographic projection of the luminous pixel 03 covers the orthographic projection of the luminescent pixel 03 on the base substrate. Through the effect of the microlens and the refractive index matching layer, the large-angle light can be converted into small-angle light, thereby improving the light output efficiency of the light-emitting pixel 03; at the same time, avoiding the color mixing problem caused by the large-angle incident on other light-emitting pixels 03.

Please continue to refer to Figures 2-5, the refractive index matching layer 07 is different from the microlens array layer 06, the surface of the microlens 61/62 in contact with the refractive index matching layer 07 is the first surface, and the first surface is The curved surface and the first surface protrude toward the one with the lower refractive index of the microlens array layer 06 and the refractive index matching layer 07 . For example, as shown in Fig. 2-Fig. 4, the refractive index of microlens array layer 06 is less than the refractive index of refractive index matching layer 07, then the first surface that microlens 61/62 contacts with refractive index matching layer 07 faces microlens array The direction of the layer 06 is convex, that is, the microlenses 61/62 included in the microlens array layer 06 are concave lenses; The first surface of the lens 61 / 62 in contact with the refractive index matching layer 07 protrudes toward the direction of the refractive index matching layer 07 , that is, the microlenses 61 / 62 included in the microlens array layer 06 are convex lenses. It should be noted that the technical solutions involved in the following embodiments are applicable to both cases.

The thin film transistor layer 02 includes a plurality of inorganic layers and a plurality of metal layers, and the inorganic layer extends from the display area AA to the non-display area BB. As shown in FIG. 2 , the thin film transistor layer 02 includes a plurality of thin film transistors 20, and the thin film transistors 20 include an active layer 21, a gate 22, and a source/drain 23, wherein the active layer 21 and the gate 22 may include The gate insulating layer 24 may include an inter-insulating layer 25 between the gate 22 and the source/drain 23 . That is, the multiple inorganic layers included in the thin film transistor layer 02 include a gate insulating layer 24 and an inter insulating layer 25, and both the gate insulating layer 24 and the inter insulating layer 25 extend from the display area AA to the non-display area BB; The multiple metal layers included in the layer 02 include a metal layer disposed on the same layer as the gate 22 and a metal layer disposed on the same layer as the source/drain 23 . It should be noted that the multiple inorganic layers included in the thin film transistor layer 02 may also include other inorganic layers except the gate insulating layer 24 and the inter-insulating layer 25, and these other inorganic layers may also extend from the display area AA. to the non-display area BB.

Please continue to refer to FIG. 2-FIG. 5, the non-display area BB includes a filling layer 10, and the filling layer 10 is disposed on the side of the inorganic layer close to the light-emitting surface of the organic light-emitting display panel. The filling layer 10 is made of the same material as at least one of the microlens array layer 06 and the refractive index matching layer 07 . As shown in Figure 2 and Figure 5, the filling layer 10 can only be made of the same material as the refractive index matching layer 07, it should be noted that the filling pattern of the filling layer 10 in Figure 2 and Figure 5 is different from that of the refractive index matching layer 07, This is for distinguishing the difference in position, structure, etc. between the two, and not for distinguishing the difference in material between the two. As shown in Figure 3, the filling layer 10 can only be made of the same material as the microlens array layer 06. It should be noted that the filling pattern of the filling layer 10 in Figure 3 is different from that of the microlens array layer 06. The difference in position, structure, etc. between the two is not the difference in material used to distinguish the two. ; As shown in FIG. 4 , the filling layer 10 includes a first filling layer 11 and a second filling layer 12 stacked, the first filling layer 11 is made of the same material as the microlens array layer 06, and the second filling layer 12 matches the refractive index The material of layer 07 is the same. It should be noted that the filling pattern of filling layer 10 and refractive index matching layer 07 in FIG. The filling pattern of the filling layer 10 is different from that of the microlens array layer 06, which is to distinguish the difference in position and structure between the two, and not to distinguish the difference in materials between the two.

Since the number of film layers in the non-display area BB is less than the number of film layers in the display area AA, for example, if the non-display area BB does not include an organic light-emitting layer, then the filling layer 10 is not provided in the non-display area BB. In the thickness direction of the light-emitting display panel, there is a step difference between the non-display area BB and the display area AA, which will result in the continuous structure that is simultaneously arranged in the display area AA and the non-display area BB. If the position between the display area AA and the non-display area BB needs to climb a slope, there may be a risk of disconnection, and if the position between the display area AA and the non-display area BB needs to climb a slope, there may be a risk of membrane rupture. By setting the filling layer 10 in the non-display area BB, the difference in thickness caused by the different film layers between the display area AA and the non-display area BB between the refractive index matching layer 07 or the microlens array layer 06 is filled, which is beneficial to the subsequent film The preparation of layers or traces can ensure the production yield. In addition, the filling layer 10 in the non-display area BB is set in the same layer as at least one of the microlens array layer 06 and/or the refractive index matching layer 07, then the filling layer 10 can be combined with the microlens array layer 06 and/or the refractive index matching layer 07. The matching layer 07 is set at the same time, which simplifies the process flow.

In one embodiment of the present application, as shown in FIG. 4 , the filling layer 10 includes a first filling layer 11 and a second filling layer 12 that are laminated. The first filling layer 11 is made of the same material as the microlens array layer 06. The second filling layer 12 is made of the same material as the refractive index matching layer 07 . Moreover, the refractive index of the microlens array layer 06 is greater than that of the refractive index matching layer 07 , that is, the refractive index of the first filling layer 11 is greater than that of the second filling layer 12 . Since the light emitted by the display area AA is not absolutely collimated light, part of the light will be emitted from the display area AA to the non-display area BB, and the angle of this part of light relative to the thickness direction of the display panel is relatively large, and it is incident on the If the large-angle light in the non-display area BB is to be emitted to the light-emitting surface, it will first pass through the first filling layer 11 and then pass through the second filling layer 12, that is, it will be emitted from the optically denser medium to the optically thinner medium, so total reflection will occur, avoiding The non-display area BB leaks light.

Fig. 6 is a partially enlarged view of the display area shown in Figs. 2-5.

As shown in FIG. 6 , the microlens array layer 06 may include microlenses 61 surrounding the area where the light-emitting pixels 03 are located, that is, the orthographic projection of the microlenses 61 on the base substrate 01 is on the surface of the light-emitting pixels 03 on the base substrate 01. The outer side of the orthographic projection and surrounds the orthographic projection of the light-emitting pixel 03 on the base substrate 01 . In addition, the refractive index matching layer 07 also covers the microlens 61, and the convex direction of the curved surface of the microlens 61 faces the one with the lower refractive index in the microlens array layer 06 and the refractive index matching layer 07, so the microlens 61 and the refractive index matching Layer 07 can convert large-angle light into small-angle light through refraction and reflection.

The light emitted by the light-emitting pixel 03 is usually not collimated light, that is, the light emitted by the light-emitting pixel 03 is light with a certain divergence angle, while the light emitted by the light-emitting pixel 03 and reaching the upper side of the light-emitting pixel 03 has a larger divergence angle and a large angle There is a high probability that the light will be totally reflected or dissipated after multiple refractions, which affects the light extraction efficiency of the light emitting pixel 03. A microlens 61 is arranged above the periphery of the light-emitting pixel 03, which can turn the large-angle light emitted by the light-emitting pixel 03 into a small-angle light through the reflection and refraction of the microlens 61 and the refractive index matching layer 07, and then can light from the top of the microlens 61. issue. In the embodiment of the present application, the light output around the light-emitting pixel 03 is increased without changing the optical path of the light-emitting pixel 03 at the normal viewing angle, thereby improving the light-emitting efficiency of the display panel, thereby reducing the power consumption of the display panel and prolonging the life of the display panel. In addition, the arrangement of the microlens 61 in the embodiment of the present application can avoid the problem of color mixing caused by the large-angle light entering adjacent light-emitting pixels.

In addition, the microlens layer 06 also includes a microlens 62 located above the light-emitting pixels 03 , and the orthographic projection of the microlens 62 on the base substrate 01 can cover the orthographic projection of the light-emitting pixels 03 on the base substrate 01 . In addition, the refractive index matching layer 07 also covers the microlens 62, and the convex direction of the curved surface of the microlens 62 is also toward the one with the lower refractive index in the microlens array layer 06 and the refractive index matching layer 07, then the microlens 62 and the refractive index The matching layer 07 can convert at least part of the large-angle light at the position of the light-emitting pixel 03 into small-angle light, avoiding total reflection, thereby improving light extraction efficiency.

In addition, in the microlens 61 and microlens 62 corresponding to the same light-emitting pixel 03, the height of the curved surface of the microlens 61 can be greater than the height of the curved surface of the microlens 62, and the refraction amplitude of the microlens 61 to light is greater than that of the microlens 62. , that is, the degree of change of the angle of light by the microlens 61 is greater than the degree of change of the angle of light by the microlens 62 . Since the probability of large-angle light appearing at the position corresponding to the light-emitting pixel 03 is small, and the maximum angle of the large-angle light here is usually smaller than the maximum angle of large-angle light at other positions, the microlens 62 converts the large-angle light into a small angle At the same time, it will not significantly change the angle of small-angle light, so as to avoid the divergence of light at a positive viewing angle and affect the display effect.

Fig. 7 is a schematic diagram of the orthographic projection of the filling layer and the refractive index matching layer in Fig. 2, Fig. 8 is a schematic diagram of the orthographic projection of the filling layer and the microlens array layer in Fig. 3, and Fig. 9 is a schematic diagram of the filling layer and the microlens array layer in Fig. 4, Schematic orthographic projection of the index-matching layer. As shown in Figures 2-5 and Figures 7-9, the positive projection of at least one of the microlens array layer 06 and the refractive index matching layer 07 on the light-emitting surface of the display panel and the positive projection of the filling layer 10 on the light-emitting surface of the display panel The projection adjoins. In the embodiment of the present application, the light-emitting surface of the display panel is the surface of the display panel that is in contact with the external environment. If the display panel includes a glass cover on the uppermost side, the light-emitting surface of the display panel can be considered as the surface where the glass cover is located.

Please refer to FIG. 2 and FIG. 7, when the material of the filling layer 10 is only the same as that of the refractive index matching layer 07, the orthographic projection of the filling layer 10 on the light-emitting surface of the display panel and the orthographic projection of the refractive index matching layer 07 on the light-emitting surface of the display panel adjoining. It can be understood that the filling layer 10 is actually the part of the refractive index matching layer 07 extending from the display area AA to the non-display area BB, that is, both are prepared at the same time.

Please combine Figure 3 and Figure 8, when the filling layer 10 is only made of the same material as the microlens array layer 06, the orthographic projection of the filling layer 10 on the light-emitting surface of the display panel and the orthographic projection of the microlens array layer 06 on the light-emitting surface of the display panel adjoining. It can be understood that the filling layer 10 is actually the part of the microlens array layer 06 extending from the display area AA to the non-display area BB, that is, both are prepared at the same time.

Please refer to FIG. 4 and FIG. 9, when the filling layer 10 includes the first filling layer 11 and the second filling layer 12 which are the same as the materials of the microlens array layer 06 and the refractive index matching layer 07 respectively, then the first filling layer 12 in the filling layer 10 The orthographic projection of a filling layer 11 on the light-emitting surface of the display panel is adjacent to the orthographic projection of the microlens array layer 06 on the light-emitting surface of the display panel, and the orthographic projection of the second filling layer 12 on the light-emitting surface of the display panel The orthographic projection of the light-emitting surface is contiguous. It can be understood that the first filling layer 11 of the filling layer 10 is actually the part of the microlens array layer 06 extending from the display area AA to the non-display area BB, that is, both are prepared at the same time; the second filling layer 12 of the filling layer 10 Actually, the refractive index matching layer 07 is the part extending from the display area AA to the non-display area BB, that is, both are prepared at the same time.

It should be noted that since the filling layer 10 needs to fill the step difference between the non-display area BB and the display area AA, and the filling layer 10 should have a flat surface, the filling layer 10 can be made of an organic material with good fluidity, such as the filling layer 10 can be OCA glue. Correspondingly, one of the microlens array layer 06 and the refractive index matching layer 07 is OCA glue.

FIG. 10 is a cross-sectional view of another organic light emitting display panel provided by an embodiment of the present application. As shown in FIG. 10 , when the filling layer 10 includes the first filling layer 11 and the second filling layer 12 , the contact surface between the first filling layer 11 and the second filling layer 12 is the second surface, and the second surface is uneven. The uneven structure of the second surface may be substantially the same as the shape of the first surface in the display area. And the unevenness of the second surface can be determined by the uneven design of the first filling layer 11 , then the first filling layer 11 can form an uneven structure when the microlens array layer 06 forms the microlenses 61 / 62 .

By setting the contact surface between the first filling layer 11 and the second filling layer 12 as an uneven structure, the bonding reliability between the first filling layer 11 and the second filling layer 12 can be increased; The area BB invades the path of the display area AA, so as to prevent the devices in the display area AA from being corroded by water and oxygen, and ensure the reliability of the organic light emitting display panel.

Figure 11 is a cross-sectional view of another organic light-emitting display panel provided by an embodiment of the present application, Figure 12 is a cross-sectional view of another organic light-emitting display panel provided by another embodiment of the present application, and Figure 13 is another organic light-emitting display panel of the present application A cross-sectional view of yet another organic light emitting display panel provided in the embodiment.

As shown in FIGS. 11-13 , the organic light-emitting display panel provided by the embodiment of the present application further includes an encapsulation layer 05 located between the organic light-emitting layer and the microlens array layer 06 . The encapsulation layer 05 at least includes a first inorganic layer 51 , a first organic layer 52 and a second inorganic layer 53 which are sequentially stacked. The encapsulation layer can be 05 to prevent external water and oxygen from corroding the organic light-emitting layer.

The encapsulation layer 05 extends from the display area AA to a part of the non-display area BB. Please continue to refer to FIGS. 11-12 , the non-display area BB also includes a retaining wall 20 surrounding the display area AA. The retaining wall 20 can block the transmission path of water and oxygen from the outside to ensure the reliability of the OLED display panel. The first organic layer 52 in the encapsulation layer 05 extends from the display area AA to the area between the barrier wall 20 and the display area AA, that is, when the encapsulation layer 05 extends from the display area AA to the non-display area BB, the first organic layer 52 is cut off before reaching the retaining wall 20.

As shown in Figures 11-12, in the organic light-emitting display panel provided by the embodiment of the present application, the inorganic layer in the non-display area BB includes a second via hole 30, and the second via hole 30 is arranged on the barrier wall 20 away from the display area AA. side. Due to the relatively brittle texture of the inorganic layer, cracks are likely to occur in the inorganic layer during the process of cutting to form an organic light-emitting display panel. By setting the second via hole 30 in the inorganic layer of the non-display area BB, the via hole 30 can prevent the crack from flowing to the display area. AA extension.

Please refer to FIG. 11 , the non-display area BB further includes a third filling structure 40 , and the third filling structure 40 is an organic material. And the third filling structure 40 is disposed in the second via hole 30 included in the inorganic layer of the non-display area BB, and at least one of the first inorganic layer 51 and the second inorganic layer 53 in the encapsulation layer 05 extends from the display area AA to the non-display area BB and cover the third filling structure 40 . By providing an organic filling structure in the second via hole 30 , the risk of cracks extending to the display area AA can be more effectively blocked.

Please continue to refer to FIG. 11 , the display area AA further includes a planarization layer 001 disposed between the organic light emitting layer and the thin film transistor layer 02 , and the planarization layer 001 can provide a flat bearing surface for the organic light emitting layer. In an embodiment of the present application, the third filling structure 40 is made of the same material as the planarization layer 001 , so the third filling structure 40 and the planarization layer 001 can be prepared simultaneously.

As shown in Figures 12-12, one of the first inorganic layer 51 or the second inorganic layer 53 extends from the display area AA to between the second via hole 30 and the barrier wall 20 and ends between the second via hole 30 and the barrier wall. Between the walls 20 , a filling layer 10 is disposed in the second via hole 30 .

In one embodiment of the present application, as shown in FIG. 12 , the filling layer 10 is made of the same material as the refractive index matching layer 07, and part of the filling layer 10 is filled in the second via hole 30, that is, the refractive index matching layer 07 is shown by The second via hole 30 is filled while the area AA extends to the non-display area BB, which simplifies the process. In one embodiment of the present application, when the filling layer 10 is made of the same material as the microlens array layer 06, part of the filling layer 10 can still be filled in the second via hole 30, that is, the microlens array layer 06 extends from the display area AA The second via hole 30 is filled while reaching the non-display area BB, which simplifies the process.

In one embodiment of the present application, as shown in FIG. 13 , when the filling layer 10 includes the first filling layer 11 and the second filling layer 12 which are made of the same materials as the microlens array layer 06 and the refractive index matching layer 07 respectively, the second A filling layer 11 can be disposed in the second via hole 30 , and the second filling layer 12 covers the first filling layer 11 .

Figure 14 is a cross-sectional view of another organic light-emitting display panel provided by an embodiment of the present application, Figure 15 is a cross-sectional view of another organic light-emitting display panel provided by another embodiment of the present application, and Figure 16 is another organic light-emitting display panel of the present application A cross-sectional view of yet another organic light emitting display panel provided in the embodiment.

As shown in FIGS. 14-15 , in the organic light emitting display panel provided by the embodiment of the present application, the filling layer 10 further includes a first via hole 50 , and a first filling structure 60 is disposed in the first via hole 50 . Wherein, as shown in FIGS. 14-15 , the first via hole 50 may pass through the filling layer 10 , and the first via hole 50 may surround the display area AA.

In an embodiment of the present application, the first filling structure 60 filled in the first via hole 50 may be an inorganic insulating material. That is, the filling layer 10 is provided with a first filling structure made of non-polar insulating material that runs through its thickness direction and surrounds the display area AA. Diffusion to display area AA

In an embodiment of the present application, the first filling structure 60 filled in the first via hole 50 may also be a conductive material, and then the first filling structure 60 may electrically connect the conductive structures above and below the filling layer 10 .

When the first filling structure 60 is a conductive material, the first filling structure 60 can specifically be silver glue. If the filling layer 10 is thicker, the corresponding first via hole 50 will be deeper. Since the silver glue has better fluidity, its It can be filled in the first via hole 50 more reliably, and there is no risk of fracture.

As shown in Figures 15-15, when the filling layer 10 includes the first filling layer 11 and the second filling layer 12 which are made of the same material as the microlens array layer 06 and the refractive index matching layer 07, the first via hole 50 may include Through the first sub-via 51 of the first filling layer 11 and the second sub-via 52 of the second sub-filling layer 12 , the first filling structure 60 may include a first sub-filling structure 61 and a second sub-filling structure 62 . Wherein, the first sub-fill structure 61 is disposed in the first sub-via 51 , and the second sub-fill structure 62 is disposed in the second sub-via 52 . And when the first filling structure 60 is a conductive material, the corresponding first sub-filling structure 61 and the second sub-filling structure 62 are both conductive materials.

Please continue to refer to FIG. 15 and FIG. 16 , when the first sub-fill structure 61 and the second sub-fill structure 62 are both conductive materials, a conductive block 70 may be further disposed between the first filling layer 11 and the second filling layer 12 . One end of the conductive block 70 is electrically connected to the first sub-fill structure 61 , and the other end is electrically connected to the second sub-fill structure 62 . The area of the conductive block 70 is larger than the area of the top surface of the first sub-fill structure 61 and the area of the bottom surface of the second sub-fill structure 62. Due to the limitation of the accuracy of the process, as shown in FIGS. 15 and 16, the second There may be deviations in the alignment between one sub-via 51 and the second sub-via 52 . Due to the larger area of the conductive block 70, the top surface of the first sub-fill structure 61 and the conductive block 70 can also be in contact with the larger process deviation. Similarly, the bottom surface of the second sub-fill structure 62 and the conductive block 70 can also be contacted in the case of large process deviations. That is, even if there is a deviation in the alignment between the first sub-via 51 and the second sub-via 52, the first sub-fill structure 61 and the second sub-fill structure 62 can also be electrically connected through the conductive block, that is, both are realized. reliability of electrical connections.

Please continue to refer to FIG. 16. In an embodiment of the present application, the organic light emitting display panel further includes a touch layer 08, and the touch layer 08 includes touch electrodes 81 and touch traces 82 electrically connected to the touch electrodes 81. Wherein, the touch electrodes 81 are used for sensing touch operations, and the touch wires 82 are used for transmitting touch signals for the touch electrodes 81 . It should be noted that the touch electrodes 81 can be used for self-capacitive touch or mutual-capacitive touch.

As shown in Figure 16, the touch layer 08 is located on the side of the refractive index matching layer 07 close to the light-emitting surface of the organic light-emitting display panel, that is, at least the refractive index matching layer 07 and micro The lens array layer, and the encapsulation layer 05 may also be disposed between the touch layer 08 and the organic light-emitting layer. Then, the distance between the touch electrode 81 in the touch layer 08 and the cathode 32 in the light-emitting pixel 03 increases, which can reduce the parasitic capacitance between the touch electrode 81 and the cathode 32 . In addition, the touch wires 82 extend from the display area AA to the non-display area BB, the touch layer 08 is disposed above the refractive index matching layer 07, and the touch wires 82 in the non-display area BB are located on the filling layer 10 Above, there is no step difference when the touch trace 82 extends from the display area AA to the non-display area BB, which can ensure the continuity of the touch trace 82 .

In addition, the non-display area BB further includes a touch connection wire 90 electrically connected to the touch wire 82 , wherein the touch wire 82 and the touch wire 90 are located in different film layers. As shown in Figure 16, it can be set on the same layer as at least one metal layer in the thin film transistor layer 02. For example, the touch trace 82 can be set on the same layer as the metal layer where the gate 22 is located, or can be set on the same layer as the metal layer where the source/drain 23 is located. Layer arrangement, when the thin film transistor layer 02 also includes other metal layers, the touch trace 82 can also be arranged on the same layer as other metal layers.

In one embodiment of the present application, only part of the touch wiring 82 can be electrically connected to the touch connection line 90 through the first filling structure 60, and then the signal lines that provide signals for the touch electrodes 81 can be arranged on two layers. Routing can reduce the number of signal lines on the same layer in the non-display area BB, thereby reducing the width of the non-display area BB.

As shown in FIG. 16 , the touch connection wire 90 is arranged on the side of the filling layer 10 away from the light emitting surface of the organic light emitting display panel, and the touch wiring 82 is arranged on the side of the filling layer 10 close to the light emitting surface of the organic light emitting display panel. Then, the specific manner of electrically connecting the touch wiring 82 to the touch connecting wire 90 is that the touch wiring 82 is electrically connected to one end of the first filling structure 60 , and the touch connecting wire 90 is electrically connected to the other end of the first filling structure 60 . connect.

When the filling layer 10 includes the first filling layer 11 and the second filling layer 12 and the first filling structure 60 includes the first sub-filling structure 61 and the second sub-filling structure 62, the touch trace 82 can be connected with the second sub-filling structure 62 , and the touch connection line 61 may be electrically connected to the first sub-fill structure 61 .

In an embodiment of the present application, the non-display area BB includes a plurality of multi-selection switches 80 , the display area AA includes a plurality of thin film transistors 20 , and the multi-channel selection switches 80 and the thin film transistors 20 are arranged on the same layer. Since the touch control layer 08 and the thin film transistor layer 02 include between the microlens array layer 06 and the refractive index matching layer 07, a filling layer 10 is provided between the touch control wiring 82 and the multi-way switch 80. The multi-way selector switch 80 can control signals to be input or output through the touch wire 82 , so the touch wire 82 should be electrically connected to the output terminal of the multi-way selector switch 80 . In this embodiment, the touch connection wire 90 may be arranged on the same layer as the output end of the multi-channel selector switch 80 and be electrically connected, so as to realize the electrical connection between the touch control wire 82 and the output end of the multi-channel selectable switch 80 .

FIG. 17 is an equivalent circuit diagram of a multiplex switch provided by an embodiment of the present application.

As shown in Figure 17, the multiplex switch 80 includes an input terminal IN and a plurality of output terminals OUT, and the multiplex switch 80 includes a plurality of control terminals, and multiple control terminals control the signal time-sharing transmission of the input terminal IN to different outputs. As shown in Figure 17, the control terminal CKV1 can control the signal of the input terminal IN to be transmitted to the leftmost output terminal OUT, the control terminal CKV2 can control the signal of the input terminal IN to be transmitted to the middle output terminal OUT, and the control terminal CKV3 can control the input The signal at terminal IN is transmitted to the rightmost output terminal OUT. It should be noted that the sectional view shown in FIG. 16 includes a structure corresponding to one input and output in the multiplex switch 80 . Please combine FIG. 16 and FIG. 17 , one output terminal OUT is electrically connected to one touch connection line 90 , and multiple output terminals OUT can be electrically connected to different touch connection lines 90 . Through the setting of the multiplexing switch 80, the number of signal lines for transmitting signals to the touch wiring 82 can be reduced, that is, the number of signal lines can be reduced to the number of signal lines connected to the input terminal IN, and the non-display area can be reduced. The width of the BB.

FIG. 18 is a cross-sectional view of another organic light emitting display panel provided by an embodiment of the present application.

As shown in Figure 18, the organic light-emitting display panel provided by the embodiment of the present application further includes a color-resistive layer 09, which includes a color-resistor 91 and a black matrix 92, and the color-resistive layer 09 is located near the refractive index matching layer 07 to the organic light-emitting One side of the light emitting surface of the display panel. By arranging the color-resist layer 09 on the microlens array layer 06 and the refractive index matching layer 07 , the risk of film breakage of the film layer extending to the non-display area BB in the color-resist layer 09 due to the difference in film thickness is avoided.

The black matrix 92 extends from the display area AA to the non-display area BB. By extending the black matrix 92 from the display area AA to the non-display area BB, the risk of light leakage in the non-display area BB can be avoided.

Please continue to refer to Figure 18, the color resistance 91 includes at least three colors, and the color resistance 91 is set in one-to-one correspondence with the light-emitting pixels 03 of the same color, for example, the red color resistance 91 is set corresponding to the light-emitting pixels 03 The resistor 91 is set corresponding to the light-emitting pixel 03 that emits green light, and the blue color resistor 91 is set corresponding to the light-emitting pixel 03 that emits blue light. The orthographic projection of the color resist 91 on the organic light-emitting layer covers the light-emitting pixels 03 , and the orthographic projection of the black matrix 92 on the organic light-emitting layer is located between two adjacent light-emitting pixels 03 . By setting the color resistance on the organic display panel, the color purity can be improved without polarizers, and the problem of light reflection caused by the polarizers is reduced.

FIG. 19 is a schematic diagram of an organic light emitting display device provided in an embodiment of the present application. The organic light emitting display device provided in the embodiment of the present application includes the organic light emitting display panel provided in any one of the above embodiments. As shown in FIG. 19 , the display device provided in the embodiment of the present application may be a mobile phone. In addition, the display device provided in the embodiment of the present application may also be a display device such as a computer or a television. As shown in FIG. 19 , the organic light emitting display device provided by the embodiment of the present application includes a display area AA corresponding to the organic light emitting display panel and a non-display area BB corresponding to the organic light emitting display panel.

By setting the filling layer 10 in the non-display area BB, the difference in thickness caused by the different film layers between the display area AA and the non-display area BB between the refractive index matching layer 07 or the microlens array layer 06 is filled, which is beneficial to the subsequent film The preparation of layers or traces can ensure the production yield. In addition, the filling layer 10 in the non-display area BB is set in the same layer as at least one of the microlens array layer 06 and/or the refractive index matching layer 07, then the filling layer 10 can be combined with the microlens array layer 06 and/or the refractive index matching layer 07. The matching layer 07 is set at the same time, which simplifies the process flow.

The above is only a preferred embodiment of the application, and is not intended to limit the application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the application should be included in the application. within the scope of protection.

Claims (20)

1. An organic light-emitting display panel, characterized in that, display area and non-display area; A thin film transistor layer, an organic light-emitting layer, a microlens array layer, and a refractive index matching layer, the organic light-emitting layer is located on the side of the thin-film transistor layer close to the light-emitting surface of the organic light-emitting display panel, and the microlens array layer is located on the The organic light-emitting layer is close to the light-emitting surface of the organic light-emitting display panel, and the refractive index matching layer is located on the side of the microlens array layer close to the light-emitting surface of the organic light-emitting display panel; The light-emitting layer includes a plurality of light-emitting pixels, the microlens array layer includes a second lens structure, and the second lens structure is convex toward a second direction, and the second direction is that the thin film transistor layer points to the refraction The direction of the index matching layer; the refractive index of the index matching layer is greater than the refractive index of the microlens array layer; The thin film transistor includes a plurality of inorganic layers, the inorganic layer extends from the display area to the non-display area, the non-display area includes a filling layer, and the filling layer is located on the inorganic layer close to the organic light emitting display panel one side of the light-emitting surface; The filling layer is made of the same material as at least one of the microlens array layer and the refractive index matching layer. 2. The organic light emitting display panel according to claim 1, characterized in that, In the second direction, the second lens structure does not at least partially overlap with the light-emitting pixels. 3. The organic light emitting display panel according to claim 1, characterized in that, The refractive index matching layer includes a first lens structure, and the first lens structure protrudes toward a first direction, and the first direction is a direction in which the refractive index matching layer points to the thin film transistor layer. 4. The organic light emitting display panel according to claim 3, characterized in that, In the first direction, the first lens structure at least partially overlaps with the light-emitting pixels. 5. The organic light emitting display panel according to claim 1, characterized in that, The orthographic projection of at least one of the microlens array layer and the refractive index matching layer on the light exit surface is adjacent to the orthographic projection of the filling layer on the light exit surface. 6. The organic light emitting display panel according to claim 1, characterized in that, In the first direction, the filling layer includes a second filling layer and a first filling layer stacked, the first filling layer is made of the same material as the microlens array layer, and the second filling layer is made of the same material as the microlens array layer. The materials of the refractive index matching layers are the same. 7. The organic light emitting display panel according to claim 6, characterized in that, The first filling layer is prepared in the same process as the microlens array layer, and the second filling layer is prepared in the same process as the refractive index matching layer. 8. The organic light emitting display panel according to claim 6, characterized in that, The first filling layer includes at least one first groove filling the refractive index matching layer. 9. The organic light emitting display panel according to claim 1, characterized in that, The filling layer includes OCA optical glue. 10. The display panel according to claim 1, characterized in that, The organic light emitting display panel also includes an encapsulation layer and a retaining wall; The encapsulation layer is located between the light-emitting layer and the microlens array layer, and in the first direction, the encapsulation layer includes a second inorganic layer, a first organic layer, and a first inorganic layer, and the encapsulation layer a layer extending from said display area to at least part of said non-display area; The barrier wall is located in the non-display area, and the first organic layer in the encapsulation layer extends from the display area to an area between the barrier wall and the display area. 11. The organic light emitting display panel according to claim 10, characterized in that, At least one of the first inorganic layer and the second inorganic layer extends to a first position of the non-display area, the filling layer extends to a second position of the non-display area, and the first A distance from the location to the display area is smaller than a distance from the second location to the display area. 12. The organic light emitting display panel according to claim 11, characterized in that, In the non-display area, the inorganic layer includes a second groove, and the second groove is located on the side of the retaining wall away from the display area; the first inorganic layer and the second inorganic layer are at least One extends from the display area to between the second groove and the retaining wall. 13. The organic light emitting display panel according to claim 12, characterized in that, In the non-display area, the inorganic layer includes at least one second groove, and the second groove is located on the side of the retaining wall away from the display area; the first inorganic layer and the second inorganic At least one of the layers extends to the region where the second groove is located, and at least one of the first inorganic layer and the second inorganic layer overlaps the second groove. 14. The organic light emitting display panel according to claim 13, characterized in that, The distance from the second groove to the display area is smaller than the distance from the second position to the display area. 15. The organic light emitting display panel according to claim 14, characterized in that, The filling layer includes OCA glue, and part of the OCA glue fills the second groove. 16. The organic light emitting display panel according to claim 1, characterized in that, The filling layer includes a first filling layer and a second filling layer, the first filling layer is made of the same material as the microlens array layer, and the second filling layer is made of the same material as the refractive index matching layer; In the non-display area, the inorganic layer includes at least one second groove, the second groove is located on the side of the retaining wall away from the display area, and the first filling layer fills the second groove. groove. 17. The organic light emitting display panel according to claim 16, characterized in that, In the non-display area, the inorganic layer includes at least one second groove, and the second groove is located on the side of the barrier wall away from the display area; The filling layer includes a first filling layer and a second filling layer, the first filling layer is made of the same material as the microlens array layer, and the second filling layer is made of the same material as the refractive index matching layer; The non-display area further includes a third filling structure, the second groove is provided with the third filling structure, and the third filling structure is an organic material. 18. The organic light emitting display panel according to claim 17, characterized in that, The display area further includes a planarization layer disposed between the organic light emitting layer and the thin film transistor layer, and the material of the third filling structure is the same as that of the planarization layer. 19. The organic light emitting display panel according to claim 1, characterized in that, The organic light-emitting display panel includes a color-resistive layer, the color-resistive layer includes a color-resistive layer and a black matrix, the color-resistant layer is located on the side of the refractive index matching layer close to the light-emitting surface of the organic light-emitting display panel, and the black matrix A matrix extends from the display area to the non-display area. 20. A display device, comprising the organic light emitting display panel according to any one of claims 1-19.

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